Lens frame for spectacles

ABSTRACT

Disclosed is a lens frame for spectacles. An elastic segment is intervened between a pair of assembling pieces which are formed at both free ends of the lens frame, respectively, with the free ends defining an assembling region. When a lens is fitted into the lens frame, the pair of assembling pieces and the elastic segment are clamped one with another by a screw which passes through them.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a lens frame for spectacles, and more particularly, the present invention relates to a lens frame for spectacles, by which a spectacle lens fitting operation can be implemented in such a way as to allow a wide range of dimensional tolerance of a spectacle lens to be absorbed and fatigability of the lens frame by a torsional load to be reduced.

[0003] 2. Description of the Related Art

[0004] Generally, a conventional lens frame which is used for fitting a lens of spectacles, is structured as illustrated in FIG. 7. That is to say, upper and lower assembling pieces 102 and 104 are formed at both free ends of a lens frame 100, respectively, with the free ends defining an assembling region. When a spectacle lens 108 is fitted into the lens frame 100, the upper and lower assembling pieces 102 and 104 are clamped with each other by a screw 106 which is threadedly coupled therethrough.

[0005] In other words, when the spectacle lens 108 is assembled to the lens frame 100, the screw 106 which clamps the upper and lower assembling pieces 102 and 104 with each other, is unscrewed to slacken the lens frame 100. Then, after fitting the spectacle lens 108 into the lens frame 100, by re-clamping the upper and lower assembling pieces 102 and 104 with each other using the screw 106, the spectacle lens 108 is securely assembled to the lens frame 100.

[0006] In the conventional lens frame 100 constructed as mentioned above, in order to ensure a secure and aesthetic assemblage of the spectacle lens 108, a size of the spectacle lens 108 must precisely be in concord with that of the lens frame 100. In this regard, in the case that the size of the spectacle lens 108 is slightly larger or smaller than that of the lens frame 100, the secure assemblage of the spectacle lens 108 cannot be effected and an aesthetic appearance of the lens frame 100 can be deteriorated.

[0007] As a consequence, a lens cutting operation using a lens cutting machine must be performed in a precise and exact manner, whereby a difficulty cannot but be caused upon performing the lens cutting operation.

[0008] Furthermore, in the case that a torsional load is applied to the lens frame 100 while the spectacles are put on, since no cushioning function is rendered to the lens frame 100, a stress cannot but be induced in the lens frame 100.

SUMMARY OF THE INVENTION

[0009] Accordingly, the present invention has been made in an effort to solve the problems occurring in the related art, and an object of the present invention is to provide a lens frame for spectacles, in which an elastic segment made of a material having a predetermined elasticity, such as rubber or the like, is intervened between upper and lower assembling pieces of the lens frame, whereby, even in the case that a size of a spectacle lens to be fitted into the lens frame is smaller or larger than that of the lens frame, a secure and aesthetic assemblage of the spectacle lens can be implemented with no obstruction.

[0010] In order to achieve the above object, according to one aspect of the present invention, there is provided a lens frame for spectacles, characterized in that an elastic segment is intervened between a pair of assembling pieces which are formed at both free ends of the lens frame, respectively, with the free ends defining an assembling region, and, when a lens is fitted into the lens frame, the pair of assembling pieces and the elastic segment are clamped one with another by a screw which passes through them.

[0011] It is preferred that the elastic segment which is used in the lens frame according to the present invention, has contoured portions which correspond to those of the assembling pieces and a cross-sectional shape which is substantially the same as that of each assembling piece.

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above objects, and other features and advantages of the present invention will become more apparent after a reading of the following detailed description when taken in conjunction with the drawings, in which:

[0013]FIG. 1 is a partially enlarged perspective view illustrating a lens frame for spectacles in accordance with an embodiment of the present invention;

[0014]FIG. 2 is an exploded perspective view illustrating the lens frame for spectacles according to the present invention;

[0015]FIG. 3 is a front view illustrating the lens frame for spectacles according to the present invention;

[0016]FIG. 4 is a transverse cross-sectional view illustrating a main part of the lens frame for spectacles according to the present invention;

[0017]FIG. 5 is a side view illustrating the main part of the lens frame for spectacles according to the present invention;

[0018]FIG. 6 is an exploded side view illustrating component elements which constitutes the main part of the lens frame for spectacles according to the present invention; and

[0019]FIG. 7 is a partially enlarged perspective view illustrating a conventional lens frame for spectacles.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0020] Reference will now be made in greater detail to a preferred embodiment of the invention, an example of which is illustrated in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings and the description to refer to the same or like parts.

[0021]FIG. 1 is a partially enlarged perspective view illustrating a lens frame for spectacles in accordance with an embodiment of the present invention; and FIG. 2 is an exploded perspective view illustrating the lens frame for spectacles according to the present invention. In the lens frame 2 for spectacles according to the present invention, upper and lower assembling pieces 8 and 10 are formed at both free ends of the lens frame 2, respectively, with the free ends defining an assembling region. A first recessed portion 4 is formed on a lower surface of the upper assembling piece 8, and a first projected portion 6 is formed on an upper surface of the lower assembling piece 10. An elastic segment 12 is intervened between the upper and lower assembling pieces 8 and 10. A second projected portion 14 which is engaged with the first recessed portion 4, is formed on an upper surface of the elastic segment 12, and a second recessed portion 16 which is engaged with the first projected portion 6, is formed on a lower surface of the elastic segment 12. When a spectacle lens 22 is fitted into the lens frame 2, the upper and lower assembling pieces 8 and 10 and the elastic segment 12 are clamped one with another by a screw 18 which passes through them.

[0022] At this time, an engaging groove 20 is defined on an inner surface of the elastic segment 12 in a manner such that the inner surface of the elastic segment 12 is flushed with an inner surface of the lens frame 2 including the upper and lower assembling pieces 8 and 10 when the elastic segment 12 is intervened and assembled between the upper and lower assembling pieces 8 and 10.

[0023] The unexplained drawing reference numeral 24 represents an earpiece of the spectacles.

[0024] In the lens frame 2 constructed as mentioned above, due to the fact that the elastic segment 12 is intervened between the upper and lower assembling pieces 8 and 10 which are formed at both free ends of the lens frame 2, respectively, with the free ends defining the assembling region, when the spectacle lens 22 is fitted into the lens frame 2, even though a size of the spectacle lens 22 is slightly larger or smaller than that of the lens frame 2, a gap is not defined between the lens frame 2 and the spectacle lens 22, whereby a secure and aesthetic assemblage of the spectacle lens 22 can be implemented.

[0025] Namely, in the case that a size of the spectacle lens 22 is slightly larger than a size of the lens frame 2, the upper and lower assembling pieces 8 and 10 are assembled with each other using the piece 18 while the elastic segment 12 is not compressed. On the contrary, in the case that a size of the spectacle lens 22 is slightly smaller than a size of the lens frame 2, as the elastic segment 12 is compressed by the upper and lower assembling pieces 8 and 10, the secure and aesthetic assemblage of the spectacle lens 22 is ensured.

[0026] In the above descriptions, the elastic segment 12 can be made of a material having a predetermined elasticity, such as rubber, foamed resin or the like.

[0027] As a result, the lens frame for spectacles according to the present invention provides advantages as described below. That is to say, since an elastic segment is intervened between a pair of assembling pieces of the lens frame, even in the case that a size of a spectacle lens to be fitted into the lens frame is smaller or larger than that of the lens frame, a secure and aesthetic assemblage of the spectacle lens can be implemented with no obstruction, whereby a wide range of dimensional tolerance of the spectacle lens can be absorbed. Further, due to the fact that the elastic segment renders a cushioning function to some extent, fatigability of the lens frame by a torsional load can be reduced. Moreover, even when an error is induced upon cutting the spectacle lens, because the assemblage of the spectacle lens is not adversely influenced by the error to some degree, an allowable error range can be enlarged and thereby, a lens cutting operation can be performed in an easy manner.

[0028] In the drawings and specification, there have been disclosed typical preferred embodiments of the invention and, although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being set forth in the following claims. 

What is claimed is:
 1. A lens frame for spectacles, characterized in that an elastic segment is intervened between a pair of assembling pieces which are formed at both free ends of the lens frame, respectively, with the free ends defining an assembling region, and, when a lens is fitted into the lens frame, the pair of assembling pieces and the elastic segment are clamped one with another by a screw which passes through them. 